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John David Fierek

DUI and DWI Attorney at Brownsburg, IN

4.5   4 reviews
  • Licensed for 25 years
    State IN
    Acquired 1998
    Active in Good Standing No misconduct found

We have not found any instances of professional misconduct for this lawyer.

About John

Learn John’s areas of practice.

Practice areas
  1. DUI and DWI

    25 years, 1,000 cases

  2. Expungement

    10 years, 10 cases

  3. Criminal defense

    25 years, 2,000 cases

  4. Appeals

    23 years, 30 cases

  5. Speeding and traffic ticket

    25 years, 200 cases

John D. Fierek, regarded as one of the top OWI attorneys in the State of Indiana for over 20 years, has successfully represented Judges, Doctors, Lawyers, and Police Officers facing OWI/DUI charges.  Mr. Fierek has won multiple OWI Jury Trials even when the State of Indiana admitted breath tests greater than 0.08.  He has also successfully litigated blood draw cases in the Indiana Supreme Court and Indiana Court of Appeals, that forced the Indiana General Assembly to change the State's blood draw procedure. Finally, John has won multiple OWI causing Death cases. Before you hire an OWI/DUI attorney, ask if they have this experience and if they don't, you owe it to yourself to contact Mr. Fierek.       



Fierek Legal Group
12 South Odell Street
Brownsburg, IN, 46112


4.5 / 5.0
  4 customer reviews
5 Star
4 Star
3 Star
2 Star
1 Star
Posted by Jill | June 2, 2018
This review is from a person who hired this attorney.
| Hired Attorney
Review of John Fierek
I hired Mr. Fierek for a DUI. I’ve never been in any trouble, so this was very traumatic for me. Mr. Fierek was super nice, very professional and made me feel at ease. I had a lot of questions and every time I sent him a text he replied immediately. He proposed a plea agreement that I was happy with and negotiated with the prosecutor to allow me to get my license back so I could start a new job in the next three days. I had court on a Thursday and had my license back by Saturday morning!!! I highly recommend Mr. Fierek if you need an exceptional attorney. Sincerely and grateful Jill
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Posted by Garrett | April 12, 2018
This review is from a person who hired this attorney.
| Hired Attorney
The best
A friend recommend John to me. Once we called him, right away he was knowledgeable and put all of my worries to rest. Then we set an appointment and got straight to business. 10/10 would go back to him if I need a lawyer
Posted by anonymous | April 11, 2018
This review is from a person who hired this attorney.
| Hired Attorney
Excellent service
I found John on a recommendation from a friend. It was great advice. He quickly put my fears to ease and delivered the exact result he promised.
Posted by anonymous | January 11, 2016
This review is from a person who hired this attorney.
| Hired Attorney
Decent Lawyer
John is a great lawyer and knows the DUI laws and courts inside out. He worked to get me a favorable plea in regards to my DUI case and helped get me in and out of court quickly on all occasions. The only reason I din't rate John as excellent is that communication was poor. I feel like there could have been better communication on what to expect going into the situation. My case was basic so he charged me a flat fee. Looking back I would have rather paid someone by the hour just for that little bit of extra "hand holding". If you have a DUI case and you are guilty without any doubt John will work to get you a favorable plea. If you want a lawyer that is going to really going to take the time to dig into your case and communicate regularly I would suggest looking elsewhere.
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Contact for Details


AVVO RATING 7.5 (Very Good)

Work Experience

  • Founding Partner
  • Fierek Legal Group
  • 2018 - Present
  • 1999 - Present
  • Partner
  • 2017 - 2017
  • 2001 - 2017
  • Marion County Public Defender Agency
  • 1998 - 2001
View all work experience


  • United States Army Judge Advocate General's School
  • Officer Advance Course
  • 2002
  • United States Army Judge Advocate General's School
  • Officer Basic Course
  • 2001
  • Indiana University School of Law, Indianapolis
  • JD - Juris Doctor
  • 1998
  • Indiana University
  • BA - Bachelor of Arts
  • 1995
View all education

Sample of Legal Cases

  • State v. Simpson
  • Not Guilty
  • State v. Ellis
  • Not Guilty


  • Military Officer Association of America
  • Lifetime Member
  • 2015 - Present

Languages Spoken

  • English
  • Spanish

Honors and Awards

  • BAC Datamaster Course
  • National Patent Analytical Systems
  • 2006
  • Mastering Scientific Evidence Certificate
  • National College for DUI Defense
  • 2002
  • 2002 Summer Session Certificate
  • National College for DUI Defense
  • 2002


  • 984 N.E.2d 1281
  • Martin v. State
  • 2013
  • 969 N.E.2d 1061
  • Moala v. State
  • 2012
  • 132 S.Ct 496
  • Temperly v. State of Indiana
  • 2011
  • 126 S.Ct. 1437
  • Napier v. State of Indiana
  • 2006
View all publications

Speaking Engagements

  • Spring Judicial College
  • Cross-Examining the Drug Recognition Expert
  • 2013
  • Indiana Bench Bar
  • OWI: So You Think You Are Sober
  • 2011

Attorney endorsements

Received (1)
Given (0)
Endorse John
Criminal defense Attorney | Feb 10
Relationship: Co-worker
"I have practiced with Mr. Fierek for approximately 15 years and would highly recommend him to clients seeking representation in the area of DUI defense. He is greatly respected in the field of DUI defense and has an excellent reputation in the community for handling complicated cases in this practice area."
This attorney hasn't created any attorney endorsements recently on Avvo.